Rock On assist in premature ejaculation. Hard. Intense and long. Rock On from California Fantasies ejaculation control for men new! Assists in premature ejaculation prolong sex for longer sexual intercourse and pleasure for both partners. Hard, intense and long. Instructions for use: apply a pea size of the Rock On cream 10 minutes before intercourse on the head of penis and massage gently. You can reapply if desire, you can easily rinse off with water.